WO2009091193A2 - 단일 커넥터로 ｕａｒｔ 및 ｕｓｂ 통신을 지원하는 휴대용 단말기 및 그 동작 방법 - Google Patents

단일 커넥터로 ｕａｒｔ 및 ｕｓｂ 통신을 지원하는 휴대용 단말기 및 그 동작 방법 Download PDF

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Publication number
WO2009091193A2
WO2009091193A2 PCT/KR2009/000221 KR2009000221W WO2009091193A2 WO 2009091193 A2 WO2009091193 A2 WO 2009091193A2 KR 2009000221 W KR2009000221 W KR 2009000221W WO 2009091193 A2 WO2009091193 A2 WO 2009091193A2
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WO
WIPO (PCT)
Prior art keywords
connector
usb
pin
signal
data
Prior art date
Application number
PCT/KR2009/000221
Other languages
English (en)
French (fr)
Korean (ko)
Other versions
WO2009091193A3 (ko
Inventor
Jae In Ko
Shin Ho Moon
Yong Tae Park
Original Assignee
Bluebird Soft Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bluebird Soft Co., Ltd. filed Critical Bluebird Soft Co., Ltd.
Priority to CN2009801031659A priority Critical patent/CN101919169A/zh
Priority to DE112009000147T priority patent/DE112009000147T5/de
Priority to US12/863,390 priority patent/US20110060850A1/en
Publication of WO2009091193A2 publication Critical patent/WO2009091193A2/ko
Publication of WO2009091193A3 publication Critical patent/WO2009091193A3/ko

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/12—End pieces terminating in an eye, hook, or fork
    • H01R11/14—End pieces terminating in an eye, hook, or fork the hook being adapted for hanging on overhead or other suspended lines, e.g. hot line clamp
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R31/00—Coupling parts supported only by co-operation with counterpart
    • H01R31/06—Intermediate parts for linking two coupling parts, e.g. adapter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits

Definitions

  • the present invention relates to a portable terminal, and more particularly, to a circuit capable of supporting UART communication and USB communication using one connector and a portable terminal including the same.
  • Portable terminals typically have one or more connectors for interfacing with external devices and support communication through these connectors.
  • Commonly used communication methods for interface with the outside are serial communication, universal asynchronous receiver / transmitter (UART) communication, universal serial bus (USB) communication, and the like.
  • a corresponding connector must also be separately provided.
  • the size and cost of the portable terminal increase. Accordingly, in order to prevent an increase in the size and cost of a portable terminal, a technology capable of supporting various communication schemes using one connector is required.
  • the technical problem to be achieved by the present invention is to provide a portable terminal capable of supporting UART communication and USB communication using one connector.
  • Another object of the present invention is to provide a portable terminal capable of automatically switching a connection path of a connector by detecting whether a device connected to the connector is a USB device.
  • the communication is possible by being connected to the USB device via a single USB connector, but also the communication is possible by being connected to the UART device. Therefore, it is not necessary to separately provide a connector according to a communication method supported by the portable terminal, so that size and cost can be reduced.
  • the present invention by detecting whether the external device connected to the USB connector is a USB device or not, and automatically switching the data lines of the connector to the internal USB device or the UART device, there is an effect of increasing user convenience.
  • FIG. 1 is a block diagram illustrating a portable terminal according to an embodiment of the present invention.
  • FIG. 2 is a configuration example of the switching unit illustrated in FIG. 1.
  • FIG. 3 is an example of a configuration of the determination unit illustrated in FIG. 1.
  • FIG. 4 is a flowchart illustrating an automatic switching method of a connection path of a USB connector of a portable terminal according to an embodiment of the present invention.
  • Portable terminal is a USB connector; A USB module selectively connected to the connector to communicate with an external USB device; At least one internal UART device, optionally connected with the connector, for communicating with an external UART device; A determination unit determining whether the connector is connected to the external USB device or the external UART device based on a signal applied to at least one of the pins of the connector; A switching unit selectively connecting the data lines of the connector to the USB module or the at least one UART device based on the determination of the determination unit; And a CPU for controlling the switching unit.
  • the connector has a pin for a power supply voltage, a first data (D +) pin, a second data (D ⁇ ) pin, and a ground pin for data transmission, and each of the data lines of the connector includes the first data ( D +) pin and the second data (D-) pin.
  • the determination unit may determine that the connector is connected to the external USB device when the second data pin reaches a predetermined logic level and a voltage equal to or greater than a predetermined level is applied to the power voltage pin.
  • a method of operating a portable terminal may include: putting data lines of a USB connector into a high-impedance state when the system is in a disabled state; Detecting whether a device connected to the connector is a USB device by detecting a signal applied to the USB connector; And selectively connecting the data lines of the connector to a USB module or at least one UART device in the portable terminal based on the determination result in the system enable state.
  • FIG. 1 is a block diagram of a portable terminal 100 according to an embodiment of the present invention.
  • 2 is a configuration example of the switching unit 130 shown in FIG. 1.
  • 3 is a configuration example of the determination unit 140 shown in FIG. 1.
  • the portable terminal 100 includes a central processing unit (CPU) 110, a connector 120, a switching unit 130, a determination unit 140, 150, a USB module 111, and a UART.
  • Devices 160 are provided.
  • the portable terminal 100 may further include other components other than the components illustrated in FIG. 1, for example, a display module, a speaker and a microphone module, a memory, a Bluetooth communication module, a battery module, an antenna, and the like.
  • the CPU 110 executes a program and / or firmware for the operation of the portable terminal 100 and generates a control signal for controlling the operation of each module or device inside the portable terminal 100.
  • the USB module 111 is provided in the CPU 110, but is not limited thereto.
  • the connector 120 is for connecting the portable terminal 100 to an external device (eg, a PC, an adapter, etc.) through a cable (not shown) and includes at least four pins.
  • One side of the cable (not shown) is connected to the connector 120, and the other side is connected to the connector of the external device.
  • At least four pins are preferably pins for the power supply voltage VBUS, two pins are pins for data (D +, D-) transmission, and the other pin is a pin for ground (ground, GND).
  • the connector 120 may be a 5-pin or 9-pin USB connector.
  • the switching unit 130 selectively connects the data lines DL1 and DL2 of the connector 120 to the USB module 111 or the at least one UART device. For example, the switching unit 130 may automatically switch the connection path of the connector 120 under the control of the CPU 110.
  • the switching unit 130 includes first and second switches 131 and 132.
  • the first switch 131 connects the data lines DL1 and DL2 of the USB connector 120 to the second switch 132 in response to the first switch control signal CSW1 generated from the CPU 110. Or high-impedance (Hi-Z).
  • Hi-Z high-impedance
  • the first switch control signal CSW1 is set to the first logic level (eg, “1”)
  • the first switch 131 connects the data lines DL1 and DL2 with the second switch 132.
  • the first switch control signal CSW1 is set to the second logic level (eg, “0”)
  • the first switch 131 may set the data lines DL1 and DL2 to high-impedance Hi-Z. Make it state.
  • the first switch control signal CSW1 may be set differently according to the state of the CPU 110 or the portable terminal 100. For example, when the battery is mounted on the portable terminal 100 and the power is turned on, the portable terminal 100 may be set to '1', and may be set to '0' when the battery is removed from the portable terminal 100 or turned off. . Also, for example, the CPU 110 is set to '1' in a wake-up state, a standby state or a sleep state, and the CPU 110 is set in a deep sleep state. 0 'may be set.
  • the system enable signal SYS_EN may be output from the CPU 110 to indicate an enable / disable state of the system.
  • the system enable signal SYS_EN is a signal that is set to, for example, the first logic level "1" in the system enable state.
  • the first switch control signal CSW1 may be set to “1” when the system enable signal SYS_EN is “1” and to "0" when the system enable signal SYS_EN is “0".
  • the USB operation of the CPU 100 may be unstable and cause a malfunction. Accordingly, the first switch 131 may set the data lines DL1 and DL2 in a high-impedance state when the CPU 110 is in a predetermined state (eg, deep sleep state as described above). In the system disabled state, the USB connector 120 is connected to the USB terminals D + and D- of the CPU 110 to prevent a possibility of malfunction that may occur.
  • a predetermined state eg, deep sleep state as described above.
  • the second switch 132 transmits the data lines DL1 ′ and DL2 ′ of the first switch 131 to the USB terminal of the CPU 110 in response to the second switch control signal CSW2 generated from the CPU 110.
  • CPLD programmable logic device
  • the second switch 132 may connect the data lines DL1 ′ and DL2 ′ to the USB of the CPU 110.
  • the second switch control signal CSW2 is set to the second logic level (for example, "0")
  • the second switch 132 is connected to the data lines DL1 'and DL2.
  • the determination unit 140 or 150 determines whether the external device connected to the connector 120 is a USB device based on the signals VBSU, D +, D-, and GND applied to at least one of the pins of the connector 120. Determine if it is a device. To this end, the determination unit 140, 150 includes a USB signal detection unit 140 and a CPLD 150.
  • the USB signal detecting unit 140 is connected to the connector 120 based on the level of the power supply voltage VBUS applied to the power supply voltage pin of the connector 120 and the signal D- of the second data pin. It detects whether the device is a USB device and generates a USB detection signal (USB_INT).
  • the USB signal detector 140 includes a regulator 141 (hereinafter referred to as LDO), a voltage detector 142, and a flip-flop 143.
  • LDO regulator 141
  • LDO voltage detector
  • flip-flop 143 flip-flop
  • the LDO 141 is connected to the power supply voltage pin of the connector 120 to serve as a regulator that generates a predetermined output voltage BYP when a voltage within a predetermined range is applied to the power supply voltage pin of the connector 120.
  • the LDO 141 includes an input terminal connected to the power supply voltage pin of the connector 120 and an output terminal for outputting the output voltage BYP, and thus the range of the voltage VBUS input to the input terminal is constant. If the voltage is greater than 3V, for example, a predetermined level of output voltage (eg 3V) may be generated. That is, when the voltage level of the power supply voltage VBUS is 3V or more, the LDO 141 may generate an output voltage BYP of 3V.
  • a predetermined level of output voltage eg 3V
  • the LDO 141 may be separately implemented outside the charger IC (not shown) or may be implemented inside the charger IC (not shown).
  • the charger IC (not shown) is a circuit for charging a battery (not shown) of the portable terminal and supplying system power to a system inside the portable terminal.
  • the voltage detector 142 has an internal delay circuit and delays and outputs the output voltage VBUS of the LDO. Putting a delay time in the voltage detector 142 may occur when the user connects a cable for connecting with an external device to the connector 120, so that the cable may not be properly plugged in at once, so that the cable is sufficiently stable in the connector 120. This is to keep the time margin until it is connected.
  • the output signal VBUS_CLK of the voltage detector 142 is input to the clock terminal CLK of the flip-flop 143, and the signal D ⁇ of the second data pin of the connector 120 is input of the flip-flop 143. It is input to the terminal D.
  • the flip flop 143 may be a D-Q flip flop.
  • the flip-flop 143 latches the signal D ⁇ input to the input terminal at the rising edge of the output signal VBUS_CLK of the voltage detector 142 and outputs it as the USB detection signal USB_INT.
  • the power supply voltage VBUS becomes a constant voltage level (eg, 5V), and the signal D- of the second data pin is predetermined logic level (eg, for a predetermined time). Low level), and changes complementarily with the signal D + of the first data pin according to the transmitted data.
  • the signal D ⁇ of the second data pin is a low level signal at the rising edge of the output signal VBUS_CLK of the voltage detector 142.
  • the USB detection signal USB_INT which is an output signal of the flip-flop 143, also becomes a low level signal.
  • the input terminal D of the flip-flop 143 at the rising edge of the output signal VBUS_CLK of the voltage detector 142.
  • the signal input to is a high level signal.
  • the output terminal of the LDO 141 may be connected to the input terminal D of the flip-flop through a resistor (not shown). That is, the input terminal D of the flip-flop may be connected to the second data pin of the connector 120 and may also be connected to the output terminal of the LDO 141 through a resistor.
  • the USB detection signal USB_INT becomes a low level signal by the signal D- of the second data pin, and the UART device other than the USB device is connected to the connector 120. Is connected, the USB detection signal USB_INT becomes a high level signal.
  • the CPLD 150 generates an alarm signal based on the USB detection signal USB_INT and the system enable signal SYS_EN generated by the CPU 110 and outputs the alarm signal to the CPU 110.
  • the USB detection signal USB_INT may be input to the CPU 110.
  • the CPU 110 may generate the second switch control signal CSW2 based on at least one of the system enable signal SYS_EN, the USB detection signal USB_INT, and the alarm signal output from the CPLD 150.
  • the CPU 110 determines that the device connected to the connector 120 is a USB device, so that the second switch 132 has data lines DL1 ′ and DL2 ′. ) May be set to connect the second switch control signal CSW2 to the USB module 111.
  • the CPU 110 determines that the device connected to the connector 120 is a UART device, so that the second switch 132 has the data lines DL1 'and DL2'. ) May be set to connect the second switch control signal CSW2 to the CPLD 150.
  • the CPLD 150 also selectively connects the data line to one of several devices using the UART communication scheme under the control of the CPU 110.
  • the CPLD 150 selectively connects the data line to any one of the UART IC 163, the GPS module 161, and the communication modem 162 under the control of the CPU 110. Whether the data line is connected to the UART IC 163, the GPS module 161, or the communication modem 162 may be controlled by the CPU 110 according to a user's setting.
  • the communication modem 162 is a communication module for supporting the CDMA communication method and / or the GSM communication method, and may be connected to an external UART device using a UART communication method for downloading firmware.
  • FIG. 4 is a flowchart illustrating a method of operating a portable terminal according to an embodiment of the present invention.
  • the portable terminal determines whether the system is in the enabled state (S41), and when the system is not in the enabled state, that is, in the system disabled state, the data pins of the connector are high-impedance. By making the state, it is possible to prevent the possibility of malfunction (S42).
  • the system When the system is in the enabled state, it detects a signal applied to the connector to determine whether the device connected to the connector is a USB device (S43). As a specific determination method, if the signal level of the D- pin of the connector is a predetermined logic level (for example, "0"), and the voltage level of the VBUS pin is above a certain level, it is determined that the device connected to the connector is a USB device. Can be (S43). If it is determined that the USB device, the data pins of the connector is connected to the USB module (S44), otherwise, the data pins of the connector are connected to one of the UART devices (S45).
  • a predetermined logic level for example, "0"
  • the voltage level of the VBUS pin is above a certain level
  • USB connector not only communication is possible by connecting to a USB device through a single USB connector, but also communication is possible by connecting to a UART device. Therefore, it is not necessary to separately provide a connector according to a communication method supported by the portable terminal.
  • a single USB connector can be replaced with other external devices as necessary. It can be conveniently used in connection with.
  • the present invention can be applied to a portable terminal. According to the present invention, the size and production cost of the portable terminal can be reduced.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Sources (AREA)
  • Information Transfer Systems (AREA)
  • Telephone Function (AREA)
PCT/KR2009/000221 2008-01-17 2009-01-15 단일 커넥터로 ｕａｒｔ 및 ｕｓｂ 통신을 지원하는 휴대용 단말기 및 그 동작 방법 WO2009091193A2 (ko)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN2009801031659A CN101919169A (zh) 2008-01-17 2009-01-15 使用单一连接器来支持uart通信与usb通信的移动终端机及其操作方法
DE112009000147T DE112009000147T5 (de) 2008-01-17 2009-01-15 Mobilgerät, das eine UART- und USB-Kommunikation unter Verwendung desselben Steckers gestattet, und Verfahren zum Betreiben desselben
US12/863,390 US20110060850A1 (en) 2008-01-17 2009-01-15 Mobile device of supporting uart and usb communication using same connector and operating method there-of

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020080005427A KR100905795B1 (ko) 2008-01-17 2008-01-17 단일 커넥터로 ｕａｒｔ 및 ｕｓｂ 통신을 지원하는 휴대용단말기 및 그 동작 방법
KR10-2008-0005427 2008-01-17

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WO2009091193A2 true WO2009091193A2 (ko) 2009-07-23
WO2009091193A3 WO2009091193A3 (ko) 2009-11-05

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US (1) US20110060850A1 (de)
KR (1) KR100905795B1 (de)
CN (1) CN101919169A (de)
DE (1) DE112009000147T5 (de)
WO (1) WO2009091193A2 (de)

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KR20060113455A (ko) * 2005-04-27 2006-11-02 엘지전자 주식회사 다기능 소켓을 사용하는 휴대 단말기 및 그 방법

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102215500A (zh) * 2010-04-09 2011-10-12 中兴通讯股份有限公司 Ap与通讯模块的端口服务配置的动态变换方法及装置
WO2011124067A1 (zh) * 2010-04-09 2011-10-13 中兴通讯股份有限公司 应用处理器ap与通讯模块间端口服务配置的动态变换方法及装置
CN102215500B (zh) * 2010-04-09 2016-03-02 中兴通讯股份有限公司 Ap与通讯模块的端口服务配置的动态变换方法及装置

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WO2009091193A3 (ko) 2009-11-05
US20110060850A1 (en) 2011-03-10
DE112009000147T5 (de) 2010-11-25
CN101919169A (zh) 2010-12-15

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